Fiskars IsoCore 22 oz Milled-face Framing Hammer, 16 Inch Ideal for big framing jobs and pounding large nails into tough lumber with power and speed Milled face grips nail head to help prevent hammer from sliding off the nail head when striking Patented IsoCore Shock Control System absorbs strike shock and vibration to reduce the punishment your body takes Insulation sleeve captures initial strike shock before it can reach your hand Full lifetime warranty